There are a few big issues with the classic content in the F1 games. You can either race using all the same car, or all different cars from different eras. There is no option to race only cars from a particular year. Also, apart from F1 2013 there are no historic tracks. One potential solution to these problems would be to include a full historic season with all cars and tracks from that season. If Codemasters were to add this to the game, what year would you want to see included?